Sleeve expansion of bolt holes in railroad rail. volume III - field experiment results

Details

• Creators:
  Lindh, D. V. ; Taylor, R. Q. ; Rose, D. M.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Boeing Company. Commercial Airplane Division for 1992-
• Corporate Contributors:
  United States. Department of Transportation. Federal Railroad Administration
• Subject/TRT Terms:
  • Cracking
  • Vacuum
  • Bolts
  • Cold working
  • Compressive strength
  • Defects
  • Extrusion
  • Fatigue cracking
  • Fatigue strength
  • Fatigue tests
  More +
• Publication/ Report Number:
  FRA/ORD-80/5, III ; DOT-TSC-FRA-5-III
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Dept. of Defense
• Abstract:
  The bolt-hole cold-expansion process has been demonstrated by laboratory tests to significantly affect the initiation and propagation of fatigue cracks from rail bolt holes such that a reduction of the incidence of rail-bolt-holde failure in cold-expanded rail would be expected. A field-verification experiment was implemented in 1977 and reported in volume I of this report. ; This volume contains the results of the field experiment, an examination of the effect of fatigue ration (R) on the observed laboratory fatigue-life improvement of cold-expanded bolt holes, an investigatin of crack growth of rails in a vacum environment, and a comparison of the fatigue performance of cold-expanded bolt holes with rail flashwelds.
• Format:
  PDF
• Funding:
  DOT-TSC-1048-3
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/10404/dot_10404_DS1.pdf
• File Type:
  [PDF - 5.69 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:cf53eb6639a5c734a9e1810d51fb98f10db26efb581f9a1b874ded304772525d